#include #include #include #include "util.h" #include "debug.h" #define BUFSIZE 8192 static const char *lzma_strerror(lzma_ret ret) { switch ((int) ret) { case LZMA_MEM_ERROR: return "Memory allocation failed"; case LZMA_OPTIONS_ERROR: return "Unsupported decompressor flags"; case LZMA_FORMAT_ERROR: return "The input is not in the .xz format"; case LZMA_DATA_ERROR: return "Compressed file is corrupt"; case LZMA_BUF_ERROR: return "Compressed file is truncated or otherwise corrupt"; default: return "Unknown error, possibly a bug"; } } int lzma_decompress_to_file(const char *input, int output_fd) { lzma_action action = LZMA_RUN; lzma_stream strm = LZMA_STREAM_INIT; lzma_ret ret; int err = -1; u8 buf_in[BUFSIZE]; u8 buf_out[BUFSIZE]; FILE *infile; infile = fopen(input, "rb"); if (!infile) { pr_err("lzma: fopen failed on %s: '%s'\n", input, strerror(errno)); return -1; } ret = lzma_stream_decoder(&strm, UINT64_MAX, LZMA_CONCATENATED); if (ret != LZMA_OK) { pr_err("lzma: lzma_stream_decoder failed %s (%d)\n", lzma_strerror(ret), ret); goto err_fclose; } strm.next_in = NULL; strm.avail_in = 0; strm.next_out = buf_out; strm.avail_out = sizeof(buf_out); while (1) { if (strm.avail_in == 0 && !feof(infile)) { strm.next_in = buf_in; strm.avail_in = fread(buf_in, 1, sizeof(buf_in), infile); if (ferror(infile)) { pr_err("lzma: read error: %s\n", strerror(errno)); goto err_fclose; } if (feof(infile)) action = LZMA_FINISH; } ret = lzma_code(&strm, action); if (strm.avail_out == 0 || ret == LZMA_STREAM_END) { ssize_t write_size = sizeof(buf_out) - strm.avail_out; if (writen(output_fd, buf_out, write_size) != write_size) { pr_err("lzma: write error: %s\n", strerror(errno)); goto err_fclose; } strm.next_out = buf_out; strm.avail_out = sizeof(buf_out); } if (ret != LZMA_OK) { if (ret == LZMA_STREAM_END) break; pr_err("lzma: failed %s\n", lzma_strerror(ret)); goto err_fclose; } } err = 0; err_fclose: fclose(infile); return err; } td>
path: root/net/bluetooth/amp.c
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authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /net/bluetooth/amp.c
parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'net/bluetooth/amp.c')